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DBJ-003
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DABUND
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Copper
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1M - 10M
Material
Color
Keywords
Application
50 ft 1/4" x 5/8" Pre Insulated Copper Tubing for HVAC
The 50 ft 1/4" x 5/8" pre insulated copper tubing is designed for mini split air conditioners, ductless HVAC systems, heat pumps and refrigerant line set installations that require reliable copper tubing with factory-applied insulation.
This HVAC copper line set includes 1/4" and 5/8" insulated copper pipes, 1/2" black rubber insulation, communication wire cable, drain hose, wall pipe, wall cover and other installation accessories for heating, ventilation and cooling systems.
Dabund Pipe has produced HVAC parts, insulated copper pipe and mini split line sets since 2008, supporting wholesalers, distributors, HVAC contractors and private-label brands with factory supply and OEM options.
What is 50 ft 1/4" x 5/8" Pre Insulated Copper Tubing?
50 ft 1/4" x 5/8" pre insulated copper tubing is a refrigerant line set used to connect the indoor and outdoor units of a mini split or split air conditioning system. It includes a smaller 1/4" copper liquid line and a larger 5/8" copper suction line.
The copper pipes are pre-insulated to reduce heat transfer, control condensation and protect the refrigerant lines during installation. The 50 ft length is suitable for projects where the outdoor condenser and indoor unit are installed at a longer distance.
Key Features of 50 ft 1/4" x 5/8" Pre Insulated Copper Tubing
50 ft pre insulated copper tubing for mini split and HVAC refrigerant line installation.
1/4" liquid line and 5/8" suction line for compatible air conditioning systems.
Includes insulated copper pipe, communication wire cable, drain hose, wall pipe and cover.
Both copper pipe ends can be flared with nuts for easier installation.
White PE insulation and black rubber insulation options are available.
Black rubber insulation thickness options include 1/2", 3/4" and 1".
Copper pipe meets ASTM B280 and C12200 standards.
Insulation can meet ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.
Suitable for ductless mini split, heat pump, VRF and unitary HVAC systems.
OEM printing, custom packaging and bulk supply are available.
Complete Mini Split Installation Kit Components
This pre insulated copper tubing kit is designed to simplify mini split air conditioner installation. It combines refrigerant piping and essential installation accessories in one package, helping contractors and distributors reduce sourcing complexity.
| Component | Description |
| 1/4" Copper Pipe | Liquid line for refrigerant flow in mini split and HVAC systems. |
| 5/8" Copper Pipe | Suction line for refrigerant return gas flow. |
| Black Rubber Insulation | Factory-applied insulation for thermal protection and condensation control. |
| Communication Wire Cable | Used for indoor and outdoor unit communication connection. |
| Drain Hose | Used for condensate water drainage from the indoor unit. |
| Wall Pipe and Cover | Protects wall penetration and improves installation appearance. |
Copper Tube and Insulation Standards
The copper tube is made for air conditioning and refrigeration applications and meets ASTM B280 and C12200 DHP copper standards. This supports stable refrigerant flow, good corrosion resistance and reliable performance in HVAC working conditions.
The insulation uses high-density closed-cell polyethylene foam or black rubber material. It is designed to reduce heat transfer, control condensation and protect copper piping during indoor and outdoor installation.
Copper tube: ASTM B280 and C12200 DHP copper.
Insulation: high-density closed-cell polyethylene foam or black rubber.
Working temperature: suitable for HVAC operating environments.
Surface burning characteristics: UL94 and UL723 options available.
Flame and smoke performance: ASTM E84 25/50 options available.
Additional properties: tear resistance, UV resistance and moisture resistance.
99.9% Pure Copper
Black Rubber Insulated Pipe
Flared Ends with Nuts
Features of Pipe Insulation Tubing
The pipe insulation tubing is designed to protect refrigerant copper lines from temperature loss, condensation and external wear. It helps maintain system performance while keeping the installation cleaner and more professional.
Black rubber insulation suitable for -40℃ to 120℃ temperature range.
Closed-cell structure helps reduce moisture condensation.
Insulation layer also works as a moisture-resistant protective layer.
Good thermal insulation performance helps maintain refrigerant stability.
UV-resistant material supports outdoor line set installation.
Flame-retardant insulation options are available for project requirements.
Benefits of 50 ft Pre Insulated Copper Tubing
Excellent Heat Preservation Insulation
The high-density insulation structure has low thermal conductivity, helping reduce heat gain or heat loss along the refrigerant line. This supports stable cooling and heating performance in mini split systems.
Moisture and Condensation Control
The insulation material helps reduce surface condensation on the copper line. This is important for indoor wall penetrations, ceiling spaces and exposed refrigerant line runs.
Flame-Retardant Insulation Options
Dabund can supply insulation options that meet common HVAC and construction requirements, including flame-retardant and smoke performance standards such as ASTM E84 and UL94.
Faster Mini Split Installation
The pre-insulated design, flared copper ends and included accessories help installers reduce field preparation time. This can improve installation efficiency for HVAC contractors and service teams.
50 ft 1/4" x 5/8" Pre Insulated Copper Tubing for HVACR Wholesalers
Dabund Pipe supplies pre insulated copper tubing for HVACR applications, including ductless mini split air conditioners, heat pumps, VRF systems and unitary systems. The product is suitable for wholesalers, distributors, contractors and installation kit suppliers.
With in-house tested insulated copper tube products, Dabund helps customers save installation time and support stable project supply with competitive pricing and professional service.
Pre Insulated Copper Tubing Size Options
Size | Length | Insulation Black Rubber | Flame Resistant |
| 1/4 + 3/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 1/2 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 5/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 5/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 3/4 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/2 + 3/4 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 7/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
Recommended Applications by AC Capacity
| Line Set Size | Common AC Capacity | Typical BTU Range | Typical Application |
| 1/4 + 3/8 | 0.75 ton - 1.0 ton | 9,000 BTU - 12,000 BTU | Small mini split air conditioner |
| 1/4 + 1/2 | 1.5 ton - 2.0 ton | 12,000 BTU - 18,000 BTU | Residential mini split system |
| 1/4 + 5/8 | 2.0 ton - 2.5 ton | 24,000 BTU - 30,000 BTU | Split air conditioner system |
| 3/8 + 5/8 | 3.0 ton - 4.0 ton | 36,000 BTU - 48,000 BTU | Ductless mini split and heat pump |
| 3/8 + 3/4 | 4.5 ton - 6.0 ton | 54,000 BTU - 72,000 BTU | Larger split AC installation |
| 3/8 + 7/8 | 6.0 ton - 8.0 ton | 72,000 BTU - 96,000 BTU | Commercial ductless HVAC systems |
The 1/4" x 5/8" copper tubing size is commonly used for 2.0 ton to 2.5 ton split air conditioner systems and 24,000 BTU to 30,000 BTU HVAC applications. Final size selection should follow the air conditioner manufacturer’s installation manual.
Why Choose Dabund 50 ft 1/4" x 5/8" Pre Insulated Copper Tubing?
Factory Experience Since 2008
Dabund Pipe is a manufacturer of insulated copper tube, mini split line set, aluminum pipe and HVAC parts. The company has long-term production and export experience for HVAC customers.
Individual Pre-Insulated Rolls
The pre-insulated copper tubing is supplied in rolls to fit ductless mini split, VRF, heat pump and unitary system installations. This helps installers handle, route and install the line set more efficiently.
Competitive B2B Supply
Dabund supports HVAC wholesalers, distributors and private-label brands with competitive pricing, stable product quality, professional service and custom packaging options.
OEM and Custom Printing
The insulation can be printed with brand name, pipe size, length, meter marks and other required information. This is suitable for HVAC accessory brands and installation kit suppliers.
Dabund Factory
Dabund produces insulated copper pipe, mini split line set, aluminum pipe and HVAC parts for global customers.
SGS Certificate
Dabund mini split line set and pre insulated copper tubing can be made with polypropylene or black rubber insulation with UV resistance, meeting ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.
Exhibition
Dabund joins HVAC exhibitions worldwide to meet customers, present mini split line set products and support face-to-face communication with distributors and contractors.
FAQ
What is 50 ft 1/4" x 5/8" pre insulated copper tubing used for?
It is used to connect indoor and outdoor units in mini split air conditioners, heat pumps and HVAC systems. The 1/4" line is typically used as the liquid line, while the 5/8" line is used as the suction line.
What AC capacity is 1/4" x 5/8" copper tubing commonly used for?
1/4" x 5/8" insulated copper tubing is commonly used for 2.0 ton to 2.5 ton split air conditioner systems, or 24,000 BTU to 30,000 BTU applications. Always confirm with the equipment installation manual.
Does this kit include accessories?
Yes. The kit can include insulated copper tubing, communication wire cable, drain hose, wall pipe, wall cover and other necessary installation parts, depending on the order configuration.
Are the copper pipe ends flared?
Yes. Both copper pipe ends can be flared and supplied with nuts, helping installers complete mini split AC connection work more efficiently.
What insulation types are available?
Dabund can offer white PE insulation and black rubber insulation. White PE thickness options include 3/8", 1/2", 3/4" and 1". Black rubber thickness options include 1/2", 3/4" and 1".
What standards does the copper tubing meet?
The copper pipe meets ASTM B280 and C12200 standards. Insulation options can meet ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.
Is this pre insulated copper tubing suitable for outdoor installation?
Yes. UV-resistant insulation options are available for outdoor line set installation. The line set should still be installed according to local HVAC code and equipment requirements.
Can I print my logo on the insulation?
Yes. Dabund supports OEM and ODM customization, including logo printing, size marking, length marking and custom packaging for distributors and private-label brands.
Are you a trading company or manufacturer?
Dabund Pipe is a manufacturer of insulated copper tube, mini split line set, aluminum pipe and HVAC parts.
Can I get a free sample?
Yes. Dabund can provide qualified customers with free samples. You can request samples through the free sample page. Express cost may need to be covered by the buyer.
What payment terms are available?
Payment terms may include T/T, L/C at sight, credit card and other agreed payment methods depending on order details.
What delivery terms can you offer?
Dabund can offer common international trade terms such as EXW, FOB, CFR and CIF.
How long is the delivery time?
Normal delivery time is usually 15 to 20 days. For urgent orders, production and shipment can be arranged in advance according to factory schedule.
